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Full text of "Alaskan glacier studies of the National Geographic Society in the Yakutat Bay, Prince William Sound and lower Copper River regions"

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PlATE  CLXIV
THE EXPANDED NORTHERN BULB OF IVf-mas GLACIER
Letters indicate boundaries of the divisions of the bulb: a-b, zone of thickest ablation muraine; b-c, zone of thick ablation moraine; c-d, zone of thin ablation
moraine.    Photograph from Station E, August 21, 1910.